Previous year MCQs

General science UPPSC 1999 GS-I
Question

The difference between nuclear reactor and atom bomb is that:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: The chain reaction in nuclear reactor is controlled

Detailed Solution:

The correct answer is “The chain reaction in nuclear reactor is controlled”.
The main difference between a nuclear reactor and an atomic bomb is that the chain reaction in a nuclear reactor is controlled, while in an atomic bomb it is uncontrolled.

Similar Questions:

A cut diamond shines brilliantly due to:
  1. A) some inherent property
  2. B) total internal reflection
  3. C) its molecular structure
  4. D) absorption of light
Match list-I with list-II and select the correct answer using the code given below:
List-I - List-I

A. Malaria - 1. Bone Marrow
B. Filaria - 2. Brain
C. Encephalitis - 3. Muscle
D. Leukemia - 4. Lymph node
5. Blood cells

Code:
A B C D
  1. A) 5 3 2 1
  2. B) 5 4 2 1
  3. C) 4 3 5 1
  4. D) 5 4 1 2
Which one of the following is a plant hormone?
  1. A) Insulin
  2. B) Thyroxin
  3. C) Oestrogen
  4. D) Cytokinin
Which one of the following countries is not a member of OPEC?
  1. A) Algeria
  2. B) China
  3. C) Indonesia
  4. D) U.A.E.
Which freedom fighter died in jail while of hunger strike?
  1. A) Bhagat Singh
  2. B) Bipin Chandra
  3. C) Jatin Das
  4. D) S.C. Bose
The inexhaustible source of energy of the star due to:
  1. A) Conversion of Hydrogen to Helium
  2. B) Conversion of Helium to Hydrogen
  3. C) Decay of radioactive elements
  4. D) Excess of oxygen that helps burning and release of energy
Heavy water is a type of
  1. A) Coolant
  2. B) Moderator
  3. C) Ore
  4. D) Fuel
Which one of the following is not achieved by transgenics?
  1. A) Production of biodegradable plastics
  2. B) Production of edible vaccines
  3. C) Production of cloned animals
  4. D) Production of transgenic crops
Which one of the following is not correctly matched:
  1. A) Isobar - atmospheric pressure
  2. B) Isohyet - Rainfall
  3. C) Isoheline - snowfall
  4. D) Isobath - depth
Electric motors operating at low voltages tend to burn out because
  1. A) they draw more current which is inversely proportional to the voltage
  2. B) they draw more current which is inversely proportional to the square root of the voltage
  3. C) they draw heat proportional to v2
  4. D) low voltage sets in electrical discharge
‘Operation Shakti’ 98 is the name:
  1. A) given to the nuclear test carried out a Pokharan in 98
  2. B) given to air exercises carried out by Indian Air Force SU 30 planes
  3. C) given to the pro-active programme of the Union Home Minister to contain terrorism in J&K
  4. D) given to military action against terrorists in Tripura
Harmful ultra-violet radiation coming from the sun can cause:
  1. A) Liver cancer
  2. B) Brain cancer
  3. C) Oral cancer
  4. D) Dermal cancer